Well, I don't know about you but what if I wanted to learn more about why Hindu's believed in reincarnation? You ask why it is and then they explain how this could be possible. If they can provide enough evidence as to why this may be possible you might accept this belief but if they do not then you choose not too still. I never said, oh well they don't have any reason to believe this there is no evidence and they wrong and I am right. According to you however doing this is just a load of stuff to force my beliefs on you, but this isn't telling them they are wrong or right, it's asking why they believe so which is a completely different thing.